Crash of nextcloud android app when try to upload

### ⚠️ Before posting ⚠️

- [x] This is a **bug**, not a question or an enhancement.
- [x] I've [searched for similar issues](https://github.com/nextcloud/android/issues) and didn't find a duplicate.
- [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Steps to reproduce

1. Tried to upload
2. 2. When choosing sirectory to upload from app freeze and crash

### Expected behaviour

It should give option to choose file and start uploading it

### Actual behaviour

As described

### Android version

14

### Device brand and model

Xiaomi 11T

### Stock or custom OS?

Stock

### Nextcloud android app version

Latest

### Nextcloud server version

Latest

### Using a reverse proxy?

Yes

### Android logs

_No response_

### Server error logs

```bash
### Cause of error

Exception in thread "main" java.lang.NullPointerException: Attempt to invoke virtual method 'boolean com.owncloud.android.datamodel.OCFile.canCreateFileAndFolder()' on a null object reference
at com.owncloud.android.ui.activity.FileDisplayActivity.browseUp(FileDisplayActivity.kt:1180)
at com.owncloud.android.ui.activity.FileDisplayActivity.onBackPressed(FileDisplayActivity.kt:1168)
at android.app.Activity.onKeyUp(Activity.java:4169)
at android.view.KeyEvent.dispatch(KeyEvent.java:2958)
at android.app.Activity.dispatchKeyEvent(Activity.java:4542)
at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.kt:96)
at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:86)
at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.kt:110)
at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:591)
at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3397)
at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:431)
at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:7883)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:7726)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7110)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:7167)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:7133)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:7298)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:7141)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:7355)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7114)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:7167)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:7133)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:7141)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7114)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:7167)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:7133)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:7331)
at android.view.ViewRootImpl$ImeInputStage.onFinishedInputEvent(ViewRootImpl.java:7566)
at android.view.inputmethod.InputMethodManager$PendingEvent.run(InputMethodManager.java:4351)
at android.view.inputmethod.InputMethodManager.invokeFinishedInputEventCallback(InputMethodManager.java:3753)
at android.view.inputmethod.InputMethodManager.finishedInputEvent(InputMethodManager.java:3744)
at android.view.inputmethod.InputMethodManager.-$$Nest$mfinishedInputEvent(Unknown Source:0)
at android.view.inputmethod.InputMethodManager$ImeInputEventSender.onInputEventFinished(InputMethodManager.java:4328)
at android.view.InputEventSender.dispatchInputEventFinished(InputEventSender.java:154)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:341)
at android.os.Looper.loopOnce(Looper.java:176)
at android.os.Looper.loop(Looper.java:314)
at android.app.ActivityThread.main(ActivityThread.java:8716)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:565)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)

### App information
* ID: `com.nextcloud.client`
* Version: `30340090`
* Build flavor: `gplay`

### Device information
* Brand: `Xiaomi`
* Device: `amber`
* Model: `21081111RG`
* Id: `UP1A.231005.007`
* Product: `amber_global`

### Firmware
* SDK: `34`
* Release: `14`
* Incremental: `V816.0.17.0.UKWMIXM`
```

### Additional information

_No response_